檔案瀏覽 manifest裡需要什麼許可權嗎為什麼運行會異常中止

 

檔案瀏覽 manifest裡需要什麼許可權嗎為什麼運行會異常中止

 

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="net.blogjava.mobile"
      android:versionCode="1"
      android:versionName="1.0">
    <application android:icon="@drawable/icon" android:label="@string/app_name">
        <activity android:name=".Main"
                  android:label="@string/app_name">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
          
    </application>
    <uses-sdk android:minSdkVersion="3" />
    </manifest>

 

 

 

 

 

 

package net.blogjava.mobile.widget;

import java.io.File;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Stack;
import android.content.Context;
import android.util.AttributeSet;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.TextView;

public class FileBrowser extends ListView implements
  android.widget.AdapterView.OnItemClickListener
{
 private final String namespace = "http://mobile.blogjava.net";
 private String sdcardDirectory;
 private List<File> fileList = new ArrayList<File>();
 private Stack<String> dirStack = new Stack<String>();
 private FileListAdapter fileListAdapter;
 private OnFileBrowserListener onFileBrowserListener;
 private int folderImageResId;
 private int otherFileImageResId;
 private Map<String, Integer> fileImageResIdMap = new HashMap<String, Integer>();
 private boolean onlyFolder = false;

 public FileBrowser(Context context, AttributeSet attrs)
 {
  super(context, attrs);
  sdcardDirectory = android.os.Environment.getExternalStorageDirectory()
    .toString();
  setOnItemClickListener(this);
  setBackgroundColor(android.graphics.Color.BLACK);

  folderImageResId = attrs.getAttributeResourceValue(namespace,
    "folderImage", 0);
  otherFileImageResId = attrs.getAttributeResourceValue(namespace,
    "otherFileImage", 0);
  onlyFolder = attrs.getAttributeBooleanValue(namespace, "onlyFolder",
    false);
  int index = 1;
  while (true)
  {
   String extName = attrs.getAttributeValue(namespace, "extName"
     + index);
   int fileImageResId = attrs.getAttributeResourceValue(namespace,
     "fileImage" + index, 0);

   if ("".equals(extName) || extName == null || fileImageResId == 0)
   {
    break;
   }
   fileImageResIdMap.put(extName, fileImageResId);
   index++;
  }

  dirStack.push(sdcardDirectory);
  addFiles();

  fileListAdapter = new FileListAdapter(getContext());
  setAdapter(fileListAdapter);

 }

 private void addFiles()
 {
  fileList.clear();
  String currentPath = getCurrentPath();
  File[] files = new File(currentPath).listFiles();
  if (dirStack.size() > 1)
   fileList.add(null);
  for (File file : files)
  {
   if (onlyFolder)
   {
    if (file.isDirectory())
     fileList.add(file);
   }
   else
   {
    fileList.add(file);
   }
  }
 }

 private String getCurrentPath()
 {
  String path = "";
  for (String dir : dirStack)
  {
   path += dir + "/";
  }
  path = path.substring(0, path.length() - 1);
  return path;
 }

 private String getExtName(String filename)
 {

  int position = filename.lastIndexOf(".");
  if (position >= 0)
   return filename.substring(position + 1);
  else
   return "";
 }

 @Override
 public void onItemClick(AdapterView<?> parent, View view, int position,
   long id)
 {
  if (fileList.get(position) == null)
  {
   dirStack.pop();
   addFiles();
   fileListAdapter.notifyDataSetChanged();
   if (onFileBrowserListener != null)
   {
    onFileBrowserListener.onDirItemClick(getCurrentPath());
   }
  }
  else if (fileList.get(position).isDirectory())
  {
   dirStack.push(fileList.get(position).getName());
   addFiles();
   fileListAdapter.notifyDataSetChanged();
   if (onFileBrowserListener != null)
   {
    onFileBrowserListener.onDirItemClick(getCurrentPath());
   }
  }
  else
  {
   if (onFileBrowserListener != null)
   {
    String filename = getCurrentPath() + "/"
      + fileList.get(position).getName();
    onFileBrowserListener.onFileItemClick(filename);
   }
  }

 }

 private class FileListAdapter extends BaseAdapter
 {
  private Context context;

  public FileListAdapter(Context context)
  {
   this.context = context;
  }

  @Override
  public int getCount()
  {
   return fileList.size();
  }

  @Override
  public Object getItem(int position)
  {
   return fileList.get(position);
  }

  @Override
  public long getItemId(int position)
  {
   return position;
  }

  @Override
  public View getView(int position, View convertView, ViewGroup parent)
  {
   LinearLayout fileLayout = new LinearLayout(context);
   fileLayout.setLayoutParams(new LayoutParams(
     LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));
   fileLayout.setOrientation(LinearLayout.HORIZONTAL);
   fileLayout.setPadding(5, 10, 0, 10);
   ImageView ivFile = new ImageView(context);
   ivFile.setLayoutParams(new LayoutParams(48, 48));
   TextView tvFile = new TextView(context);
   tvFile.setTextColor(android.graphics.Color.WHITE);
   tvFile.setTextAppearance(context,
     android.R.style.TextAppearance_Large);

   tvFile.setPadding(5, 5, 0, 0);
   if (fileList.get(position) == null)
   {

    if (folderImageResId > 0)
     ivFile.setImageResource(folderImageResId);
    tvFile.setText(". .");
   }
   else if (fileList.get(position).isDirectory())
   {
    if (folderImageResId > 0)
     ivFile.setImageResource(folderImageResId);
    tvFile.setText(fileList.get(position).getName());
   }
   else
   {
    tvFile.setText(fileList.get(position).getName());
    Integer resId = fileImageResIdMap.get(getExtName(fileList.get(
      position).getName()));
    int fileImageResId = 0;
    if (resId != null)
    {
     if (resId > 0)
     {
      fileImageResId = resId;
     }

    }
    if (fileImageResId > 0)
     ivFile.setImageResource(fileImageResId);
    else if (otherFileImageResId > 0)
     ivFile.setImageResource(otherFileImageResId);
   }

   tvFile.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT,
     LayoutParams.WRAP_CONTENT));
   fileLayout.addView(ivFile);
   fileLayout.addView(tvFile);
   return fileLayout;
  }
 }

 public void setOnFileBrowserListener(OnFileBrowserListener listener)
 {
  this.onFileBrowserListener = listener;
 }
}